J. Mroczkowski
Biographical details
| Code | SWI-M-011422 |
|---|---|
| Gender | Male |
| Used name | J.•Mroczkowski |
Results
| Sport | Competition | Host City | Country | Event | Placement | Country | |
|---|---|---|---|---|---|---|---|
| Swimming | 1954 European Aquatics Championships | Torino |  ITA |
100 m Freestyle, Men | =13 |  POL |
|
| Swimming | 1954 European Aquatics Championships | Torino | ITA |
4 x 200 m Freestyle Relay, Men | 5 | POL |